Cho hàm số \(y=f(x)\) có bảng biến thiên như hình...
Câu hỏi: Cho hàm số \(y=f(x)\) có bảng biến thiên như hình vẽ bên. Giá trị cực tiểu của hàm số là số nào sau đây?![](data:image/png;base64,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)
A. - 4
B. 3
C. 0
D. - 1
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG năm 2019 môn Toán Trường THPT Chuyên Lam Sơn - Thanh Hóa lần 2